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ABLIC Electronic Components Datasheet

S-1172 Datasheet

CMOS VOLTAGE REGULATOR

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S-1172 Series
www.ablicinc.com
© ABLIC Inc., 2007-2015
HIGH RIPPLE-REJECTION LOW DROPOUT
HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.2.2_03
The S-1172 Series, developed by using CMOS technology, is a positive voltage regulator with a super low dropout voltage,
high-accuracy output voltage and low current consumption.
The S-1172 Series provides the very low dropout voltage and the large output current due to the built-in transistor with low
on-resistance. The S-1172 Series includes an overcurrent protection circuit that prevents the load current from exceeding
the current capacitance of the output transistor, a thermal shutdown circuit that prevents damage due to overheating, and
an inrush current limit circuit to limit the excessive inrush current generated at power-on.
The ON/OFF circuit ensures longer battery life. Compared with the voltage regulators using the conventional CMOS
technology, a large variety of capacitors are available, including small ceramic capacitors.
High heat radiation HSOP-6 and small SOT-89-5 packages realize high-density mounting.
Features
Output voltage:
Input voltage:
Output voltage accuracy:
Dropout voltage:
Current consumption:
Output current:
Input and output capacitors:
Ripple rejection:
Built-in overcurrent protection circuit:
Built-in thermal shutdown circuit:
Built-in inrush current limit circuit:
Built-in ON/OFF circuit:
Operation temperature range:
Lead-free, Sn 100%, halogen-free*2
1.0 V to 5.0 V, selectable in 0.05 V step
1.5 V to 5.5 V
1.0% (1.0 V to 1.45 V output product: 15 mV)
70 mV typ. (3.0 V output product, IOUT = 300 mA)
During operation: 70 A typ., 90 A max. (3.0 V output product)
During power-off: 0.1 A typ., 1.0 A max.
Possible to output 1000 mA (3.0 V output product, VIN VOUT(S) 1.0 V)*1
A ceramic capacitor of 4.7 F or more can be used.
70 dB typ. (1.0 V output product, f = 1.0 kHz)
Limits overcurrent of output transistor.
Prevents damage caused by heat.
Limits excessive inrush current at power-on.
Ensures Long battery life.
Ta = 40°C to 85°C
*1. Attention should be paid to the power dissipation of the package when the output current is large.
*2. Refer to “Product Name Structure” for details.
Applications
Constant-voltage power supply for battery-powered device
Constant-voltage power supply for TV, notebook PC and home electric appliance
Constant-voltage power supply for portable equipment
Packages
SOT-89-5
HSOP-6
1


ABLIC Electronic Components Datasheet

S-1172 Datasheet

CMOS VOLTAGE REGULATOR

No Preview Available !

HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1172 Series
Block Diagram
*1
VIN
Overcurrent
protection circuit
Thermal shutdown circuit
ON/OFF
ON/OFF circuit
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 1
Rev.2.2_03
VOUT
2


Part Number S-1172
Description CMOS VOLTAGE REGULATOR
Maker ABLIC
Total Page 30 Pages
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